Fig. 1From: Comparison of different approaches to estimating age standardized net survivalComparison of Different Approaches to Estimating Net Survival (with 95 % confidence intervals) for 2117 Men Aged 75+, Diagnosed with Cancer of the Rectum in England between 1992 and 2007. The Confidence Interval for the Pohar Perme Method is Shown by the Shaded AreaBack to article page